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Figure 1. Tunneling of apple fruit caused by larvae of the codling moth. Codling moth is the most important insect pest of apple and pears in North America. Damage is done by the larvae, which are cream-colored caterpillars that tunnel fruit and produce âwormyâ apples (Figure 1).
Its head is visible when viewed from above. As larva, the darkling beetle is called the mealworm. The mealworms are about an inch in length and have a tough yellowish brown exoskeleton and are cylindrical.The mealworm has six small jointed legs, brown bands around their bodies and two antennae.fter changing colors from brown to black it searches for a mate and only lives for a few months. The life cycle lasts three to five months. Predators of mealworms and darkling beetles are birds, rodents, lizards, predatory beetles and spiders.